package offer;

import java.util.List;

@FunctionalInterface
public interface RestoreIpAddresses {
    List<String> restoreIpAddresses(String s);
}
class RestoreIpAddressesImpl1 implements RestoreIpAddresses{

    @Override
    public List<String> restoreIpAddresses(String s) {
        char[] strs = s.toCharArray();

        return null;
    }
    private void restoreIpAddressesHelper(List<String> ans, char[] s, int curIndex, int curPart){
        int n = s.length;

    }

}
